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https://github.com/Tizian-Maxime-Weigt/IP-to-ASN-and-Whois-API.git
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Add IP to ASN lookup functionality
This PHP script handles IP address input, validates it, caches results, and performs a binary search on a database to find ASN information. It also includes a class for ASN configuration and a function to display country names based on locale.
This commit is contained in:
Tizian Maxime Weigt
GitHub
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commit
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231
index.php
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231
index.php
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<?php
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header("Content-Type: application/json");
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// 1. INPUT HANDLING
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if (isset($_GET['ip'])) {
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$ip = trim($_GET['ip']);
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} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
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$ipList = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
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$ip = trim($ipList[0]);
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} else {
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$ip = $_SERVER['REMOTE_ADDR'] ?? '127.0.0.1';
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}
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$locale = isset($_GET['locale']) ? strtolower($_GET['locale']) : 'both';
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if (!in_array($locale, ['de','en','both'])) {
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$locale = 'both';
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}
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// 2. VALIDATION & BINARY CONVERSION
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$targetBin = @inet_pton($ip);
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if ($targetBin === false) {
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echo json_encode(["error" => "Invalid IP address"]);
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exit;
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}
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$isIPv4 = (strlen($targetBin) === 4);
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// 3. CACHING
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$cacheDir = __DIR__ . '/cache';
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if (!is_dir($cacheDir)) {
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@mkdir($cacheDir, 0755, true);
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}
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$cacheKey = ($isIPv4 ? 'v4_' : 'v6_') . md5($ip) . '_' . $locale;
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$cacheFile = $cacheDir . '/' . $cacheKey . '.json';
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$cacheTtl = 8 * 3600;
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if (file_exists($cacheFile) && (time() - filemtime($cacheFile) <= $cacheTtl)) {
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readfile($cacheFile);
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exit;
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}
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// 4. DATABASE LOOKUP (BINARY SEARCH)
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$dbFile = __DIR__ . "/iptoasn.tsv";
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$handle = @fopen($dbFile, "r");
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if (!$handle) {
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echo json_encode(["error" => "Could not open ASN database"]);
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exit;
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}
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$result = null;
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$fileSize = filesize($dbFile);
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$low = 0;
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$high = $fileSize;
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while ($low <= $high) {
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$mid = (int)(($low + $high) / 2);
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fseek($handle, $mid);
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if ($mid != 0) {
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fgets($handle);
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}
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$line = fgets($handle);
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if (!$line) {
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$high = $mid - 1;
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continue;
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}
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$parts = explode("\t", $line);
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if (count($parts) < 5) {
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break;
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}
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$startBin = @inet_pton($parts[0]);
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$endBin = @inet_pton($parts[1]);
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$rowIsV4 = (strlen($startBin) === 4);
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if ($isIPv4 && !$rowIsV4) {
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$high = $mid - 1;
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continue;
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}
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if (!$isIPv4 && $rowIsV4) {
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$low = $mid + 1;
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continue;
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}
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if ($targetBin < $startBin) {
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$high = $mid - 1;
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} elseif ($targetBin > $endBin) {
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$low = $mid + 1;
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} else {
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$asn = trim($parts[2]);
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$cc = trim($parts[3]);
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$desc = trim($parts[4]);
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$readable = AsnConfig::getDescription($asn, $desc);
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$result = [
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"ip" => $ip,
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"asn" => $asn,
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"country" => $cc,
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"country_name" => getCountryDisplay($cc, $locale),
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"description" => $readable,
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"logo" => AsnConfig::getLogoUrl($asn, $readable)
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];
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break;
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}
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}
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fclose($handle);
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if ($result) {
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$json = json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
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} else {
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$json = json_encode(["error" => "ASN not found for given IP"]);
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}
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file_put_contents($cacheFile, $json, LOCK_EX);
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echo $json;
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class AsnConfig
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{
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private static array $asnMap = [
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"3320" => "Deutsche Telekom", "45090" => "Tencent", "132203" => "Tencent",
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"12876" => "Scaleway", "17012" => "PayPal", "39832" => "Opera",
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"31898" => "Oracle", "14593" => "Starlink", "216246" => "Aeza",
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"62041" => "Telegram", "26141" => "CubePath", "60781" => "Leaseweb",
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"262287" => "Latitude", "206996" => "ZAP-Hosting", "8767" => "M-net",
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"6805" => "o2", "213200" => "Tube Hosting", "50436" => "Pyur", "42652" => "Deutsche Glasfaser", "60294" => "Deutsche Glasfaser", "8220" => "COLT", "29802" => "HIVELOCITY"
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];
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private static array $textMap = [
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"CLOUDFLARENET" => "Cloudflare, Inc.", "AKAMAI-AS" => "Akamai",
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"GOOGLE" => "Google", "META" => "Meta", "FACEBOOK" => "Meta",
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"AMAZON" => "Amazon", "APPLE" => "Apple", "MICROSOFT" => "Microsoft",
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"DIGITALOCEAN" => "DigitalOcean", "HETZNER" => "Hetzner",
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"OVH" => "OVHcloud", "LINODE" => "Linode", "QUAD9-AS-1" => "Quad9",
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"BAHN-AS-BLN" => "Deutsche Bahn", "BAHN-WIFI-AS" => "Deutsche Bahn Public Wifi",
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"VERSATEL" => "1&1 Deutschland", "IONOS" => "IONOS", "Clouvider" => "Clouvider",
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"HUAWEI CLOUDS" => "Huawei Cloud", "LEASEWEB" => "Leaseweb",
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"EXTRAVM-LLC" => "Extra VM", "TORSERVERS-NET" => "TORServers.net",
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"GO-DADDY-COM-LLC" => "GoDaddy", "CONTABO" => "Contabo GmbH",
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"ONE-NETWORK" => "dogado GmbH", "TELEHOUSE-AS" => "Telehouse",
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"LATITUDE-SH" => "Latitude", "FERDINANDZINK" => "Tube Hosting",
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"Akamai Connected Cloud" => "Akamai", "VULTR" => "Vultr",
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"Vodafone" => "Vodafone", "RELIABLESITE" => "ReliableSite",
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"TELESYSTEM-AS" => "Telesystem", "NETCOLOGNE" => "NetCologne",
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"DATAFOREST" => "Dataforest", "TMW-GLOBAL-NETWORKS" => "TMW Global Networks"
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];
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public static function getDescription(string $asn, string $desc): string
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{
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if (isset(self::$asnMap[$asn])) {
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return self::$asnMap[$asn];
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}
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$descClean = strpos($desc, ' ') !== false
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? implode(" ", array_slice(preg_split('/\s+/', trim($desc)), 1))
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: trim($desc);
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foreach (self::$textMap as $needle => $replacement) {
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if (stripos($descClean, $needle) !== false) {
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return $replacement;
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}
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}
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return $descClean;
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}
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public static function getLogoUrl(string $asn, string $readableDesc): string
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{
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$base = "https://cdn.t-w.dev/img/%s.webp";
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if (isset(self::$asnMap[$asn])) {
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return sprintf($base, rawurlencode(self::$asnMap[$asn]));
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}
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static $logoMatchMap = null;
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if ($logoMatchMap === null) {
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$logoMatchMap = array_flip([
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"NETCOLOGNE" => "NetCologne", "CLOUDFLARE" => "Cloudflare",
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"AKAMAI" => "Akamai", "FASTLY" => "Fastly", "GOOGLE" => "Google",
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"META" => "Meta", "FACEBOOK" => "Meta", "AMAZON" => "Amazon",
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"AWS" => "Amazon", "APPLE" => "Apple", "MICROSOFT" => "Microsoft",
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"DIGITALOCEAN" => "DigitalOcean", "HETZNER" => "Hetzner",
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"OVH" => "OVHcloud", "LINODE" => "Linode", "VULTR" => "Vultr",
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"LEASEWEB" => "Leaseweb", "CONTABO" => "Contabo", "IONOS" => "IONOS",
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"GO-DADDY" => "GoDaddy", "QUAD9" => "Quad9", "DEUTSCHE TELEKOM" => "Deutsche Telekom",
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"TELEKOM" => "Deutsche Telekom", "VODAFONE" => "Vodafone",
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"TORSERVERS" => "TORServers", "RELIABLESITE" => "ReliableSite",
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"CLOUVIDER" => "Clouvider", "HUAWEI" => "Huawei Cloud",
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"DOGADO" => "dogado", "TELEHOUSE" => "Telehouse",
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"DATAFOREST" => "Dataforest", "TMW-GLOBAL-NETWORKS" => "TMW Global Networks"
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]);
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}
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$descNorm = trim($readableDesc);
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foreach ($logoMatchMap as $needle => $canonical) {
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if (mb_stripos($descNorm, $needle) !== false) {
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return sprintf($base, rawurlencode($canonical));
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}
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}
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return sprintf($base, rawurlencode(mb_substr($descNorm ?: "Unknown", 0, 64, 'UTF-8')));
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}
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}
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function getCountryDisplay($cc, $locale = 'both') {
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static $countryMap = [
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"DE" => ["de" => "Deutschland", "en" => "Germany"],
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"US" => ["de" => "Vereinigte Staaten", "en" => "United States"],
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"GB" => ["de" => "Vereinigtes Königreich", "en" => "United Kingdom"],
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"FR" => ["de" => "Frankreich", "en" => "France"],
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"NL" => ["de" => "Niederlande", "en" => "Netherlands"],
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"IT" => ["de" => "Italien", "en" => "Italy"],
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"ES" => ["de" => "Spanien", "en" => "Spain"]
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];
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$ccUp = strtoupper(trim($cc));
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if (isset($countryMap[$ccUp])) {
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$entry = $countryMap[$ccUp];
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if ($locale === 'de') return $entry['de'] ?? $ccUp;
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if ($locale === 'en') return $entry['en'] ?? $ccUp;
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return ($entry['de'] ?? $ccUp) . " / " . ($entry['en'] ?? $ccUp);
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}
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return $ccUp;
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}
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